1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
  4 * All Rights Reserved.
  5 */
  6#include "xfs.h"
  7#include "xfs_fs.h"
  8#include "xfs_shared.h"
  9#include "xfs_format.h"
 10#include "xfs_log_format.h"
 11#include "xfs_trans_resv.h"
 12#include "xfs_mount.h"
 13#include "xfs_inode.h"
 14#include "xfs_trans.h"
 15#include "xfs_trans_priv.h"
 16#include "xfs_inode_item.h"
 17
 18#include <linux/iversion.h>
 19
 20/*
 21 * Add a locked inode to the transaction.
 22 *
 23 * The inode must be locked, and it cannot be associated with any transaction.
 24 * If lock_flags is non-zero the inode will be unlocked on transaction commit.
 25 */
 26void
 27xfs_trans_ijoin(
 28	struct xfs_trans	*tp,
 29	struct xfs_inode	*ip,
 30	uint			lock_flags)
 31{
 32	struct xfs_inode_log_item *iip;
 33
 34	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 35	if (ip->i_itemp == NULL)
 36		xfs_inode_item_init(ip, ip->i_mount);
 37	iip = ip->i_itemp;
 38
 39	ASSERT(iip->ili_lock_flags == 0);
 40	iip->ili_lock_flags = lock_flags;
 41	ASSERT(!xfs_iflags_test(ip, XFS_ISTALE));
 42
 43	/* Reset the per-tx dirty context and add the item to the tx. */
 44	iip->ili_dirty_flags = 0;
 45	xfs_trans_add_item(tp, &iip->ili_item);
 46}
 47
 48/*
 49 * Transactional inode timestamp update. Requires the inode to be locked and
 50 * joined to the transaction supplied. Relies on the transaction subsystem to
 51 * track dirty state and update/writeback the inode accordingly.
 52 */
 53void
 54xfs_trans_ichgtime(
 55	struct xfs_trans	*tp,
 56	struct xfs_inode	*ip,
 57	int			flags)
 58{
 59	struct inode		*inode = VFS_I(ip);
 60	struct timespec64	tv;
 61
 62	ASSERT(tp);
 63	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 64
 65	tv = current_time(inode);
 66
 67	if (flags & XFS_ICHGTIME_MOD)
 68		inode_set_mtime_to_ts(inode, tv);
 69	if (flags & XFS_ICHGTIME_CHG)
 70		inode_set_ctime_to_ts(inode, tv);
 71	if (flags & XFS_ICHGTIME_CREATE)
 72		ip->i_crtime = tv;
 73}
 74
 75/*
 76 * This is called to mark the fields indicated in fieldmask as needing to be
 77 * logged when the transaction is committed.  The inode must already be
 78 * associated with the given transaction. All we do here is record where the
 79 * inode was dirtied and mark the transaction and inode log item dirty;
 80 * everything else is done in the ->precommit log item operation after the
 81 * changes in the transaction have been completed.
 82 */
 83void
 84xfs_trans_log_inode(
 85	struct xfs_trans	*tp,
 86	struct xfs_inode	*ip,
 87	uint			flags)
 88{
 89	struct xfs_inode_log_item *iip = ip->i_itemp;
 90	struct inode		*inode = VFS_I(ip);
 91
 92	ASSERT(iip);
 93	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 94	ASSERT(!xfs_iflags_test(ip, XFS_ISTALE));
 95
 96	tp->t_flags |= XFS_TRANS_DIRTY;
 97
 98	/*
 99	 * First time we log the inode in a transaction, bump the inode change
100	 * counter if it is configured for this to occur. While we have the
101	 * inode locked exclusively for metadata modification, we can usually
102	 * avoid setting XFS_ILOG_CORE if no one has queried the value since
103	 * the last time it was incremented. If we have XFS_ILOG_CORE already
104	 * set however, then go ahead and bump the i_version counter
105	 * unconditionally.
106	 */
107	if (!test_and_set_bit(XFS_LI_DIRTY, &iip->ili_item.li_flags)) {
108		if (IS_I_VERSION(inode) &&
109		    inode_maybe_inc_iversion(inode, flags & XFS_ILOG_CORE))
110			flags |= XFS_ILOG_IVERSION;
111	}
112
113	iip->ili_dirty_flags |= flags;
114}
115
116int
117xfs_trans_roll_inode(
118	struct xfs_trans	**tpp,
119	struct xfs_inode	*ip)
120{
121	int			error;
122
123	xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE);
124	error = xfs_trans_roll(tpp);
125	if (!error)
126		xfs_trans_ijoin(*tpp, ip, 0);
127	return error;
128}